1TI SoC Ethernet Switch Controller Device Tree Bindings 2------------------------------------------------------ 3 4Required properties: 5- compatible : Should be "ti,cpsw" 6- reg : physical base address and size of the cpsw 7 registers map 8- interrupts : property with a value describing the interrupt 9 number 10- interrupt-parent : The parent interrupt controller 11- cpdma_channels : Specifies number of channels in CPDMA 12- ale_entries : Specifies No of entries ALE can hold 13- bd_ram_size : Specifies internal descriptor RAM size 14- rx_descs : Specifies number of Rx descriptors 15- mac_control : Specifies Default MAC control register content 16 for the specific platform 17- slaves : Specifies number for slaves 18- active_slave : Specifies the slave to use for time stamping, 19 ethtool and SIOCGMIIPHY 20- cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds 21- cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds 22 23Optional properties: 24- ti,hwmods : Must be "cpgmac0" 25- no_bd_ram : Must be 0 or 1 26- dual_emac : Specifies Switch to act as Dual EMAC 27 28Slave Properties: 29Required properties: 30- phy_id : Specifies slave phy id 31- mac-address : Specifies slave MAC address 32 33Optional properties: 34- dual_emac_res_vlan : Specifies VID to be used to segregate the ports 35 36Note: "ti,hwmods" field is used to fetch the base address and irq 37resources from TI, omap hwmod data base during device registration. 38Future plan is to migrate hwmod data base contents into device tree 39blob so that, all the required data will be used from device tree dts 40file. 41 42Examples: 43 44 mac: ethernet@4A100000 { 45 compatible = "ti,cpsw"; 46 reg = <0x4A100000 0x1000>; 47 interrupts = <55 0x4>; 48 interrupt-parent = <&intc>; 49 cpdma_channels = <8>; 50 ale_entries = <1024>; 51 bd_ram_size = <0x2000>; 52 no_bd_ram = <0>; 53 rx_descs = <64>; 54 mac_control = <0x20>; 55 slaves = <2>; 56 active_slave = <0>; 57 cpts_clock_mult = <0x80000000>; 58 cpts_clock_shift = <29>; 59 cpsw_emac0: slave@0 { 60 phy_id = <&davinci_mdio>, <0>; 61 /* Filled in by U-Boot */ 62 mac-address = [ 00 00 00 00 00 00 ]; 63 }; 64 cpsw_emac1: slave@1 { 65 phy_id = <&davinci_mdio>, <1>; 66 /* Filled in by U-Boot */ 67 mac-address = [ 00 00 00 00 00 00 ]; 68 }; 69 }; 70 71(or) 72 mac: ethernet@4A100000 { 73 compatible = "ti,cpsw"; 74 ti,hwmods = "cpgmac0"; 75 cpdma_channels = <8>; 76 ale_entries = <1024>; 77 bd_ram_size = <0x2000>; 78 no_bd_ram = <0>; 79 rx_descs = <64>; 80 mac_control = <0x20>; 81 slaves = <2>; 82 active_slave = <0>; 83 cpts_clock_mult = <0x80000000>; 84 cpts_clock_shift = <29>; 85 cpsw_emac0: slave@0 { 86 phy_id = <&davinci_mdio>, <0>; 87 /* Filled in by U-Boot */ 88 mac-address = [ 00 00 00 00 00 00 ]; 89 }; 90 cpsw_emac1: slave@1 { 91 phy_id = <&davinci_mdio>, <1>; 92 /* Filled in by U-Boot */ 93 mac-address = [ 00 00 00 00 00 00 ]; 94 }; 95 }; 96